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Posted

Hi Guys

I have a Titan LSD from my 2016 420R for sale with 5000 mls on it. It failed the wheel turning test and the oil was good and black so I reckon it's knackered. I've replaced it with a Quaife which I think is more suitable for my requirements but would be interested in opinions on its sale value as a reconditionable unit.

Jeff

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Posted

An identical sounding unit just sold three weeks' ago on ebay for £299, so I guess that is the market value.

James

Posted

That sounds a good price. A new one is about £1000, a rebuild kit £500 plus fitting (CC prices) so £300 for a unit in need of rebuild seems quite high. 

Then again, the kit is £300 from Titan which makes more sense. 

Posted

The Caterham rebuild kit contains a few extra items if needed compared with the Titan one (such as the diff ring bolts, and a wider selection of shims by the looks of it), but all the wear items are in both kits. When I did my rebuild I bought the Caterham kit to ensure I wasn't short of any items for the perfect adjustment (bearing in mind shipping costs and time to Canada if I'm missing anything), but any subsequent rebuilds I do will be fine with my current stock of shims, bolts and a Titan kit.

Posted

One for the diff experts would a 420R from 2016 and a 420R SV from 2017 have the same ratio ? Mazda Gearbox for my SV

ChrisC  do you know ?

Thanks

Mrp

Posted

The Mazda 5sp normally has a 3.91 BMW diff.  But I assume the CWP isn't for sale, because its a part that's not available as a spare part from BMW.  So if that needs replacing you have to start with a new diff.  The 3.64 was fitted to 6 speeds.  

Edit 5/5, I miss read the Caterham Part site, change 3.62 to 3.64. 

Posted

Oh possibly I've misunderstood in my ignorance I thought this was the whole thing I could get refurbished and refitted not just the internat LSD unit. Sorry if I have mislead you Jeff.

Mrp

Posted

If you want to go from 3.62 to 3.91 as the diff ratio, you could always get a 3.91:1 CW&P from a BMW specialist or salvaged diff, the 3.91 in the 168K BMW diff was used in quite a few cars including the E46 3-series for 318 to 320 models, X3 2.5i, etc.

Posted

Yeah I was getting confused. Not unsual though! It's just the Titan LSD unit (which fits in a BMW housing).

I'll put it in the for sale section.

Jeff

Posted

The 6 speed has a 3.64 BMW, the 3.62 was the old Sierra CWP wasn't it?.

I had assumed we were only talking about the Titan unit, £299 would certainly be a good price for a complete differential, housing, CWP and all! I'm now wondering what it was that James B saw on EBay.

As Aerobod says, you can pick up older BMW 168 diffs but the only parts of use are the CWP, the housings and backplates are different. I have seen them for as little as £150, though high mileage and unknown history.

Posted

Managed to get this guys. It was in need of a refurb so I think Ill advertise for £300 as that seems the going rate!

Jeff

20210505_164944.thumb.jpg.71819511183792d151540e67c1178bb4.jpg

Posted

As Peter says, the BMW 168K diff in use is in fact a 3.64:1 ratio (40 tooth crown wheel, 11 tooth pinion), looks like 3.62 has been used in general diff conversations historically. A 3.62 diff would be a 47 tooth crown wheel with 13 tooth pinion, as variants of the Sierra diff are.

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